View ka431a datasheet:

www.fairchildsemi.com KA431/KA431A/KA431L Programmable Shunt Regulator Features Description • Programmable Output Voltage to 36 Volts The KA431/KA431A/KA431L are three-terminal adjustable • Low Dynamic Output Impedance 0.20 Typical regulator series with a guaranteed thermal stability over • Sink Current Capability of 1.0 to 100mA applicable temperature ranges. The output voltage may be • Equivalent Full-Range Temperature Coefficient of set to any value between VREF (approximately 2.5 volts) 50ppm/°C Typical and 36 volts with two external resistors These devices have a • Temperature Compensated for Operation Over Full Rated typical dynamic output impedance of 0.2W active output Operating Temperature Range circuitry provides a very sharp turn on characteristic, • Low Output Noise